947731158 has 32 divisors (see below), whose sum is σ = 2297531520. Its totient is φ = 287191080.

The previous prime is 947731157. The next prime is 947731189. The reversal of 947731158 is 851137749.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947731151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 797160 + ... + 798347.

It is an arithmetic number, because the mean of its divisors is an integer number (71797860).

Almost surely, 2^947731158 is an apocalyptic number.

947731158 is an abundant number, since it is smaller than the sum of its proper divisors (1349800362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

947731158 is a wasteful number, since it uses less digits than its factorization.

947731158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595529 (or 1595523 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 947731158 is about 30785.2425359944. The cubic root of 947731158 is about 982.2643593155.

The spelling of 947731158 in words is "nine hundred forty-seven million, seven hundred thirty-one thousand, one hundred fifty-eight".